Satin Anodized aluminum with 1-1/4″ back leg and 9/16″ face. This product is 8’6″ long. We can also do longer sizes up to 18′, if you wish to order anything bigger than 8’6″ please call for pricing, and please note that longer pieces require freight truck shipment. J trim for 1/2″ material is used for trimming and framing 1/2″ cork, dry erase and chalkboard panels. It can be used to frame all 4 sides, top and bottom or just at the bottom of panels to support weight while adhesive cures and to protect edges.We stock in longer lengths which ship by truck and can cut to specifications. Call or email to inquire.